• Arun Kumar

Shell Script to Display Number in Words

Below Linux shell script allows us to convert the user input to words from numbers. Here we will be using the case statement with for loop. The bash case statement is generally used to simplify complex conditionals when you have multiple different choices.

vi ntow.sh
echo -n "Enter number: "
read n
len=$(echo $n | wc -c)
len=$(( $len - 1 ))
echo "Your number $n in words : "
for (( i=1; i<=$len; i++ ))
   # get one digit at a time
    digit=$(echo $n | cut -c $i)
   # use case control structure to find digit equivalent in words 
    case $digit in
        0) echo -n "zero " ;;
        1) echo -n "one " ;;
        2) echo -n "two " ;;
        3) echo -n "three " ;;
        4) echo -n "four " ;;
        5) echo -n "five " ;;
        6) echo -n "six " ;;
        7) echo -n "seven " ;;
        8) echo -n "eight " ;;
        9) echo -n "nine " ;;
# just print a new line
echo ""

Here is the sample output of the above script

More ways to use the bash case statement

  • You can use it to print the official language of a given country

  • You can use the case for user YES / No as you see while software installation


Recent Posts

See All

Basic Linux Commands

This article describes basic Linux commands that you must know as a system or database administrator. Below commands in Linux help you manage any Linux server fast and smoothly. Linux Command List Che

Linux Firewall with iptables and firewalld

In this article will be covering details regarding iptables and firewalld which helps in Linux firewall management. We will also be looking at how to enable specific ports (1521 for Oracle) inside ipt

Passwordless SSH in Linux

Every time you ssh from one Linux server to another, you need to enter target server user's password. We can also setup passwordless ssh in Linux between two Linux servers so that you don't have to en